html,
body,
ul,
ol,
p,
h1,h2,h3,h4,h5,h6 {
    margin: 0;
    padding: 0;
}
html,body {
    width: 100%;
    user-select: none;
}
header,
section,
nav,
aside,
footer,
main,
div,
ul,
ol,
p,
h1,h2,h3,h4,h5,h6{
    box-sizing: border-box;
}
a,
a:hover,
a:visited,
a:focus {
    text-decoration: none;
    color: #000;
    -webkit-tap-highlight-color: transparent;
}
input , button , textarea {
    border: 1px solid #ccc;
    outline: none;
    box-sizing: border-box;
}

ul , ol {
    list-style: none;
}